JP2528971Y2 - Carburetor coupling for reed valve type two-cycle engine - Google Patents

Carburetor coupling for reed valve type two-cycle engine

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Publication number
JP2528971Y2
JP2528971Y2 JP1988016711U JP1671188U JP2528971Y2 JP 2528971 Y2 JP2528971 Y2 JP 2528971Y2 JP 1988016711 U JP1988016711 U JP 1988016711U JP 1671188 U JP1671188 U JP 1671188U JP 2528971 Y2 JP2528971 Y2 JP 2528971Y2
Authority
JP
Japan
Prior art keywords
carburetor
reed valve
outward flange
protruding
cylindrical portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP1988016711U
Other languages
Japanese (ja)
Other versions
JPH01119867U (en
Inventor
和夫 三木
Original Assignee
川崎重工業 株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 川崎重工業 株式会社 filed Critical 川崎重工業 株式会社
Priority to JP1988016711U priority Critical patent/JP2528971Y2/en
Publication of JPH01119867U publication Critical patent/JPH01119867U/ja
Application granted granted Critical
Publication of JP2528971Y2 publication Critical patent/JP2528971Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

【考案の詳細な説明】 (産業上の利用分野) 本考案は、吸気孔にリードバルブが設置されたリード
バルブ式2サイクル機関と気化器とを接続する気化器継
手に関するものである。
DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a carburetor coupling for connecting a carburetor to a reed valve type two-cycle engine having a reed valve installed in an intake hole.

(従来技術及びその問題点) 従来、吸気孔にリードバルブが設置されたリードバル
ブ式2サイクル機関と気化器とを接続する気化器継手と
して、例えば第7図のように、筒状部50と、この筒状部
50の一端から軸芯方向に突出して気化器51の吸気管部52
の外周に嵌合する円筒部53と、前記筒状部50の他端部外
周から半径方向に突出してリードバルブケース54の外向
きフランジ55に当接する外向きフランジ部56と、前記筒
状部50の他端から軸芯方向に突出して前記リードバルブ
ケース54の内面に当接する1対の舌片状の突出部57とが
弾性ゴムにより一体に形成され、かつ前記外向きフラン
ジ部56の内部に枠状の金属製の補強材58を埋設したもの
がある。この気化器継手は、筒状部50および突出部57の
内面により、断面円形の気化器51の吸気管部52の内面と
断面矩形のリードバルブケース54の内面とを円滑に接続
して、吸気の流れを円滑にし、機関の出力や応答性の向
上を図ったものである。すなわち、エアーガイドとして
機能する突出部57を気化器継手に一体化したものである
(実公昭50-15052号公報参照)。
(Prior art and its problems) Conventionally, as a carburetor coupling for connecting a carburetor to a reed valve type two-cycle engine having a reed valve installed in an intake hole, for example, as shown in FIG. , This tubular part
An intake pipe section 52 of the carburetor 51 protruding from one end of 50 in the axial direction.
A cylindrical portion 53 fitted to the outer periphery of the cylindrical portion 50; an outward flange portion 56 projecting radially from the outer periphery of the other end of the cylindrical portion 50 to abut against an outward flange 55 of the reed valve case 54; A pair of tongue-shaped protrusions 57 projecting from the other end of the shaft 50 in the axial direction and abutting against the inner surface of the reed valve case 54 are integrally formed of elastic rubber, and the inside of the outward flange 56 is formed. And a frame-shaped metal reinforcing material 58 is embedded. This carburetor coupling smoothly connects the inner surface of the intake pipe portion 52 of the carburetor 51 having a circular cross section and the inner surface of the reed valve case 54 having a rectangular cross section by the inner surfaces of the cylindrical portion 50 and the protruding portion 57, so that the air is sucked. The flow is smooth, and the output and responsiveness of the engine are improved. That is, the protrusion 57 functioning as an air guide is integrated with the carburetor joint (see Japanese Utility Model Publication No. 50-15052).

しかしながら、このような従来の気化器継手では、補
強材58が突出部57に埋設されていないので、突出部57が
比較的薄い場合、吸気の正負圧により突出部57が振動し
たり、またガソリンや熱により突出部57が変形したりし
て、円滑な吸気の流れが妨げられるという不都合があっ
た。
However, in such a conventional carburetor joint, since the reinforcing member 58 is not embedded in the protrusion 57, when the protrusion 57 is relatively thin, the protrusion 57 vibrates due to the positive / negative pressure of the intake air, and the gasoline There is an inconvenience that the protruding portion 57 is deformed due to heat or heat, and a smooth flow of intake air is hindered.

(課題を解決するための手段) 本考案は、筒状部2と、この筒状部2の一端から軸芯
方向に突出して気化器3の吸気管部4の外周に嵌合する
円筒部5と、前記筒状部2の他端部外周から半径方向外
方に突出してリードバルブケース6の外向きフランジ7
に当接する外向きフランジ部8と、前記筒状部2の他端
の左右から軸芯方向に突出して前記リードバルブケース
6の内面に当接しかつ対向する1対の突出部9とからな
り、これらが弾性ゴムにより一体に形成され、かつ前記
筒状部2および突出部9の内面により断面円形の前記気
化器3の吸気管部4内面と断面矩形の前記リードバルブ
ケース6内面とを円滑に接続し、前記外向きフランジ部
8と筒状部2と突出部9との内部に、外向きフランジ部
8内の枠状の本体部10aから筒状部2の他端部を通って
左右突出部9の先端部付近に至る硬質材料からなる縦長
断面舌片状の突出部10bを有する補強材10を一体に埋設
しかつ外向きフランジ部8内の補強材10の外向きフラン
ジ枠状の本体部10aの他端外側突出面10dがリードバルブ
ケース6の外向きフランジ7に直接当接してシリンダ13
に締着されるようにしたことを特徴とするリードバルブ
式2サイクル機関の気化器継手である。
(Means for Solving the Problems) The present invention is directed to a cylindrical portion 2 and a cylindrical portion 5 protruding in the axial direction from one end of the cylindrical portion 2 and fitted to the outer periphery of an intake pipe portion 4 of a carburetor 3. And an outward flange 7 of the reed valve case 6 projecting radially outward from the outer periphery of the other end of the cylindrical portion 2.
And a pair of protruding portions 9 protruding in the axial direction from the left and right ends of the other end of the cylindrical portion 2 and abutting on the inner surface of the reed valve case 6 and facing the same. These are integrally formed of elastic rubber, and the inner surfaces of the cylindrical portion 2 and the protruding portion 9 smoothly connect the inner surface of the intake pipe portion 4 of the carburetor 3 having a circular cross section and the inner surface of the reed valve case 6 having a rectangular cross section. The outer flange 8, the cylindrical portion 2, and the projecting portion 9 are connected to each other and project from the frame-shaped main body 10 a in the outward flange 8 through the other end of the cylindrical portion 2. A reinforcement 10 having a longitudinally extending tongue-shaped protrusion 10b made of a hard material and extending near the tip of the portion 9 is integrally embedded and an outward flange frame-shaped body of the reinforcement 10 in the outward flange 8 is provided. The outside protruding surface 10d of the other end of the portion 10a is the outward flange of the reed valve case 6. 7 directly in contact with cylinder 13
A carburetor coupling for a reed valve type two-stroke engine, wherein

(作用) 外向きフランジ部8と筒状部2と左右突出部9との内
部に、外向きフランジ部8から筒状部2の他端部を通っ
て突出部9の先端部付近に至る硬質材料からなる縦長断
面舌片状の突出部10bを有する補強材10を埋設したの
で、突出部9の強度が向上し、機関の上下振動や吸気の
正負圧により突出部9が振動したり、またガソリンや熱
により突出部9が変形したりするようなことがない。
(Effect) Hard inside the outward flange 8, the cylindrical portion 2, and the left and right protrusions 9, extending from the outward flange 8 through the other end of the cylindrical portion 2 to near the distal end of the protrusion 9. Since the reinforcing member 10 having the tongue-shaped protrusion 10b having a vertically long cross section made of a material is embedded, the strength of the protrusion 9 is improved, and the protrusion 9 vibrates due to the vertical vibration of the engine and the positive / negative pressure of the intake air. The projection 9 is not deformed by gasoline or heat.

(実施例) 以下、本考案の一実施例を第1図〜第6図に基づいて
説明する。
(Embodiment) An embodiment of the present invention will be described below with reference to FIGS.

第1図は本考案の一実施例におけるリードバルブ式2
サイクル機関の気化器継手の横断平面図、第2図は同縦
断正面図、第3図は第1図におけるIII-III矢視断面
図、第4図は第1図におけるIV-IV矢視断面図、第5図
は第1図におけるV-V矢視断面図、第6図は同気化器継
手の使用状態の横断平面図で、1は気化器継手であり、
この気化器継手1は、筒状部2と、この筒状部2の一端
から軸芯方向に突出して気化器3の吸気管部4の外周に
嵌合する円筒部5と、前記筒状部2の他端部外周から半
径方向に突出してリードバルブケース6の外向きフラン
ジ7に当接する外向きフランジ部8と、前記筒状部2の
他端から軸芯方向に突出して前記リードバルブケース6
の内面に当接する1対の舌片状の突出部9とからなり、
全体が弾性ゴムにより一体に構成されている。そして前
記外向きフランジ部8と筒状部2の他端部と突出部9と
の内部には、外向きフランジ部8から筒状部2の他端部
を通って突出部9の先端部付近に至る補強材10が埋設さ
れている。この補強材10は、アルミニウム合金等の金属
あるいは硬質の合成樹脂等の硬質材料からなり、前記外
向きフランジ部8および筒状部2の他端部に埋設された
枠状の本体部10aと、この本体部10aの内周部から一体に
突出して前記突出部9の内部に埋設された一対の舌片状
の突出部10bとにより構成されている。そして1対の突
出部10bは、第3図ないし第5図に示すように、断面形
状がほぼ楕円形でかつ先細りになっている。
FIG. 1 shows a reed valve type 2 in one embodiment of the present invention.
FIG. 2 is a longitudinal sectional front view of the carburetor coupling of the cycle engine, FIG. 3 is a sectional view taken along the line III-III in FIG. 1, and FIG. 4 is a sectional view taken along the line IV-IV in FIG. FIG. 5, FIG. 5 is a cross-sectional view taken along the arrow VV in FIG. 1, FIG. 6 is a cross-sectional plan view of the use state of the carburetor joint, and 1 is a carburetor joint.
The carburetor coupling 1 includes a cylindrical portion 2, a cylindrical portion 5 protruding in the axial direction from one end of the cylindrical portion 2 and fitted to the outer periphery of an intake pipe 4 of a carburetor 3, An outward flange portion 8 radially projecting from the outer periphery of the other end of the cylindrical member 2 and abutting against the outward flange 7 of the reed valve case 6; 6
And a pair of tongue-shaped projections 9 that abut against the inner surface of
The whole is integrally formed of elastic rubber. The inside of the outward flange 8, the other end of the tubular portion 2, and the protruding portion 9, from the outward flange 8 through the other end of the tubular portion 2, near the distal end of the protruding portion 9. Is buried. The reinforcing member 10 is made of a metal such as an aluminum alloy or a hard material such as a hard synthetic resin, and has a frame-shaped main body portion 10a embedded in the outward flange 8 and the other end of the cylindrical portion 2. The main body 10a is composed of a pair of tongue-shaped protruding portions 10b integrally protruding from the inner peripheral portion of the main body 10a and embedded in the protruding portion 9. As shown in FIGS. 3 to 5, the pair of protrusions 10b have a substantially elliptical cross-sectional shape and are tapered.

前記円筒部5の内面5aは円筒面であって、前記吸気管
部4の外周面との間のシールのために全周にわたって環
状突起12が一体に突設されている。前記筒状部2の内面
2aと前記突出部9の内面9aとは、断面円形の吸気管部4
の内面と断面矩形のリードバルブケース6の内面とを円
滑に接続するために、吸気管部4側からリードバルブケ
ース6側にかけて円形断面から矩形断面に滑らかに変化
している。前記外向きフランジ部8の外周部には、図示
していないが、4隅にボルト孔が穿設されており、これ
らボルト孔を貫通して機関のシリンダ13に螺合するボル
ト(図示せず)により気化器継手1とリードバルブケー
ス6とがシリンダ13に固定されている。これらボルトは
前記補強材10の本体部10aを貫通している。また外向き
フランジ部8の他端面8aには、前記外向きフランジ7と
の間のシールのために枠状の環状突起15が一体に突設さ
れている。前記シリンダ13の吸気孔13aに挿入されたリ
ードバルブケース6は、周知のように、平面視矩形でか
つ正面から見ると先細りの三角形であり、上下に各々窓
孔16が形成されて、これら窓孔16を覆うようにリードバ
ルブ17が配置されている。そしてリードバルブケース6
の先端部に一体に設けられた仕切板18の遊端部の両端部
は、前記1対の突出部9の先端に形成された溝19(第2
図)に嵌合している。20(第6図)は前記円筒部5を吸
気管部4に定着するバンドである。なお、気化器3の吸
気管部4の軸芯とシリンダ13の吸気孔13aの軸芯とは一
致していないので、気化器継手1の軸芯は屈曲してい
る。
An inner surface 5a of the cylindrical portion 5 is a cylindrical surface, and an annular projection 12 is integrally provided over the entire circumference for sealing between the inner surface 5a and the outer peripheral surface of the intake pipe portion 4. Inner surface of the cylindrical portion 2
2a and the inner surface 9a of the protruding portion 9 are connected to the intake pipe portion 4 having a circular cross section.
In order to smoothly connect the inner surface of the reed valve case 6 and the inner surface of the reed valve case 6 having a rectangular cross section, the cross section smoothly changes from a circular cross section to a rectangular cross section from the intake pipe portion 4 side to the reed valve case 6 side. Although not shown, bolt holes are formed at four corners in the outer peripheral portion of the outward flange portion 8, and bolts (not shown) that penetrate through these bolt holes and are screwed into the cylinder 13 of the engine. ), The carburetor joint 1 and the reed valve case 6 are fixed to the cylinder 13. These bolts penetrate the main body 10a of the reinforcing member 10. On the other end surface 8a of the outward flange portion 8, a frame-shaped annular projection 15 is integrally provided so as to be sealed with the outward flange 7. As is well known, the reed valve case 6 inserted into the intake hole 13a of the cylinder 13 has a rectangular shape in plan view and a triangular shape which is tapered when viewed from the front. A reed valve 17 is arranged so as to cover the hole 16. And reed valve case 6
Both ends of the free end of the partition plate 18 provided integrally with the front end of the pair of projections 9 are formed with grooves 19 (second
(Fig.). Reference numeral 20 (FIG. 6) denotes a band for fixing the cylindrical portion 5 to the intake pipe portion 4. Since the axis of the intake pipe 4 of the carburetor 3 does not match the axis of the intake hole 13a of the cylinder 13, the axis of the carburetor joint 1 is bent.

次に作用を説明する。機関運転中の混合気すなわち吸
気は、吸気管部4の円形断面の吸気通路から、リードバ
ルブケース6内の矩形断面の吸気通路へと、気化器継手
1の筒状部2および突出部9内の断面形状が円形から矩
形に滑らかに変化する吸気通路を経て円滑に流れる。し
たがって、機関の出力や応答性の向上を図ることができ
る。しかも、補強材10に本体部10aから突出する突出部1
0bを設けて、これら突出部10bを気化器継手1の突出部
9内に位置させたので、突出部9の強度が向上すること
から、吸気の正負圧により突出部9が振動したり、ガソ
リンや熱により突出部9が変形したりするのを防止でき
る。したがって、吸気の円滑な流れを常に良好に維持で
き、機関の出力や応答性の向上を確保できる。
Next, the operation will be described. During the operation of the engine, the air-fuel mixture, that is, the intake air, flows from the intake passage having a circular cross section of the intake pipe section 4 to the intake passage having a rectangular cross section in the reed valve case 6 within the cylindrical portion 2 and the protrusion 9 of the carburetor joint 1. Flows smoothly through an intake passage whose cross-sectional shape smoothly changes from circular to rectangular. Therefore, the output and responsiveness of the engine can be improved. In addition, the protruding portion 1 protruding from the main body 10a
0b, and these projections 10b are located within the projections 9 of the carburetor coupling 1, so that the strength of the projections 9 is improved. Deformation of the protruding portion 9 due to heat or heat can be prevented. Therefore, a smooth flow of intake air can always be maintained satisfactorily, and the output and response of the engine can be improved.

(考案の効果) 以上説明したように、本考案によれば、左右の突出部
9の内部に、外向きフランジ部8内の枠状の本体部10a
から筒状部2の他端部を通って左右突出部9の先端部付
近に至る硬質材料からなる縦長断面舌片状の突出部10b
を有する補強材10を一体に埋設しているので、上下の振
動に対して継手筒状部2の上下の撓みを効果的に防止す
ることができ、気化器3の性能が安定し、ひいては機関
の性能が向上する。又突出部9の強度が向上することか
ら、吸気の正負圧により突出部9が振動したり、ガソリ
ンや熱により突出部9が変形したりするのを防止でき
る。したがって、吸気の円滑な流れを常に良好に維持で
き、機関の出力や応答性の向上を確保できる。しかも、
シリンダ13に対して、リードバルブケース6と気化器継
手1を正確かつ強固に固定することができる。
(Effects of the Invention) As described above, according to the present invention, the frame-shaped main body 10 a in the outward flange 8 is provided inside the left and right protrusions 9.
A tongue-shaped protrusion 10b made of a hard material extending from the other end of the cylindrical portion 2 to the vicinity of the tip of the left and right protrusion 9.
Since the reinforcing member 10 having the following structure is embedded integrally, the vertical deformation of the joint tubular portion 2 can be effectively prevented against vertical vibration, and the performance of the vaporizer 3 is stabilized, and the engine Performance is improved. In addition, since the strength of the protrusion 9 is improved, it is possible to prevent the protrusion 9 from vibrating due to the positive / negative pressure of the intake air and from being deformed by gasoline or heat. Therefore, a smooth flow of intake air can always be maintained satisfactorily, and the output and response of the engine can be improved. Moreover,
The reed valve case 6 and the carburetor joint 1 can be accurately and firmly fixed to the cylinder 13.

【図面の簡単な説明】[Brief description of the drawings]

第1図は本考案の一実施例におけるリードバルブ式2サ
イクル機関の気化器継手の横断平面図、第2図は同縦断
正面図、第3図は第1図におけるIII-III矢視断面図、
第4図は第1図におけるIV-IV矢視断面図、第5図は第
1図におけるV-V矢視断面図、第6図は同気化器継手の
使用状態の横断平面図、第7図は従来の気化器継手の使
用状態の横断平面図である。 1……気化器継手、2……筒状部、3……気化器、4…
…吸気管部、5……円筒部、6……リードバルブケー
ス、7……外向きフランジ、8……外向きフランジ部、
9……突出部、10……補強材
FIG. 1 is a cross-sectional plan view of a carburetor coupling of a reed valve type two-stroke engine according to an embodiment of the present invention, FIG. 2 is a vertical front view thereof, and FIG. 3 is a cross-sectional view taken along the line III-III in FIG. ,
4 is a cross-sectional view taken along the line IV-IV in FIG. 1, FIG. 5 is a cross-sectional view taken along the line VV in FIG. 1, FIG. 6 is a cross-sectional plan view of the use state of the carburetor joint, and FIG. FIG. 10 is a cross-sectional plan view of a conventional carburetor joint in use. 1 ... carburetor joint, 2 ... tubular part, 3 ... carburetor, 4 ...
... intake pipe part, 5 ... cylindrical part, 6 ... reed valve case, 7 ... outward flange, 8 ... outward flange part,
9 Projection, 10 Reinforcement

Claims (1)

(57)【実用新案登録請求の範囲】(57) [Scope of request for utility model registration] 【請求項1】筒状部(2)と、この筒状部(2)の一端
から軸芯方向に突出して気化器(3)の吸気管部(4)
の外周に嵌合する円筒部(5)と、前記筒状部(2)の
他端部外周から半径方向外方に突出してリードバルブケ
ース(6)の外向きフランジ(7)に当接する外向きフ
ランジ部(8)と、前記筒状部(2)の他端の左右から
軸芯方向に突出して前記リードバルブケース(6)の内
面に当接しかつ対向する1対の突出部(9)とからな
り、これらが弾性ゴムにより一体に形成され、かつ前記
筒状部(2)および突出部(9)の内面により断面円形
の前記気化器(3)の吸気管部(4)内面と断面矩形の
前記リードバルブケース(6)内面とを円滑に接続し、
前記外向きフランジ部(8)と筒状部(2)と突出部
(9)との内部に、外向きフランジ部(8)内の枠状の
本体部(10a)から筒状部(2)の他端部を通って左右
突出部(9)の先端部付近に至る硬質材料からなる縦長
断面舌片状の突出部(10b)を有する補強材(10)を一
体に埋設しかつ外向きフランジ部(8)内の補強材(1
0)の外向きフランジ枠状の本体部(10a)の他端外側突
出面(10d)がリードバルブケース(6)の外向きフラ
ンジ(7)に直接当接してシリンダ(13)に締着される
ようにしたことを特徴とするリードバルブ式2サイクル
機関の気化器継手。
1. A tubular part (2) and an intake pipe part (4) of a carburetor (3) projecting from one end of the tubular part (2) in the axial direction.
And a cylindrical portion (5) fitted to the outer periphery of the cylindrical member (2), and an outer portion protruding radially outward from the outer periphery of the other end of the cylindrical portion (2) and abutting against the outward flange (7) of the reed valve case (6). A pair of protruding portions (9) protruding in the axial direction from the left and right ends of the other end of the cylindrical portion (2) and abutting against the inner surface of the reed valve case (6). These are integrally formed of elastic rubber, and have a circular cross section with the inner surface of the intake pipe (4) of the carburetor (3) having a circular cross section by the inner surfaces of the cylindrical portion (2) and the protruding portion (9). Connect the inner surface of the rectangular reed valve case (6) smoothly,
Inside the outward flange portion (8), the tubular portion (2), and the protruding portion (9), the frame-shaped main body portion (10a) inside the outward flange portion (8) and the tubular portion (2). A reinforcement member (10) having a vertically long tongue-shaped projection (10b) made of a hard material and extending to the vicinity of the tip of the left and right projection (9) through the other end of the slab, and integrally buried and outward flanged Reinforcement in section (8) (1
0) The outwardly projecting surface (10d) of the other end of the frame-shaped body (10a) of the outward flange directly contacts the outward flange (7) of the reed valve case (6) and is fastened to the cylinder (13). A carburetor coupling for a reed valve type two-stroke engine, wherein the carburetor coupling is provided.
JP1988016711U 1988-02-10 1988-02-10 Carburetor coupling for reed valve type two-cycle engine Expired - Lifetime JP2528971Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988016711U JP2528971Y2 (en) 1988-02-10 1988-02-10 Carburetor coupling for reed valve type two-cycle engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988016711U JP2528971Y2 (en) 1988-02-10 1988-02-10 Carburetor coupling for reed valve type two-cycle engine

Publications (2)

Publication Number Publication Date
JPH01119867U JPH01119867U (en) 1989-08-14
JP2528971Y2 true JP2528971Y2 (en) 1997-03-12

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Application Number Title Priority Date Filing Date
JP1988016711U Expired - Lifetime JP2528971Y2 (en) 1988-02-10 1988-02-10 Carburetor coupling for reed valve type two-cycle engine

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Country Link
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014214611A (en) * 2013-04-22 2014-11-17 株式会社デンソー Suction device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS609481U (en) * 1982-09-17 1985-01-23 三菱電機株式会社 Automatic sewing machine presser foot device
JPS6045810U (en) * 1983-09-06 1985-03-30 本田技研工業株式会社 Rotary valve type two-stroke engine

Also Published As

Publication number Publication date
JPH01119867U (en) 1989-08-14

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